CN101431291B

CN101431291B - Processing method for high-power switch power supply commutation bridge and water cooling board

Info

Publication number: CN101431291B
Application number: CN 200810232033
Authority: CN
Inventors: 张曙; 高大庆; 高亚林; 辛俊业; 闫怀海; 唐勇
Original assignee: Institute of Modern Physics of CAS
Current assignee: Institute of Modern Physics of CAS
Priority date: 2008-10-11
Filing date: 2008-10-11
Publication date: 2010-12-08
Anticipated expiration: 2028-10-11
Also published as: CN101431291A

Abstract

The invention relates to a method for processing a high-power switching power rectifier bridge and an IGBT water cold plate, comprising the following steps: a. a copper plate which has the thickness of 25mm and is a rectangle of 190mm*990mm; corresponding holes are respectively punched at intervals at the two ends from the horizontal direction and the longitudinal direction of the rectangular copper plate by a drill bit; b. longitudinal hole passages are respectively communicated with horizontal hole passages, and screw threads are formed by a lathe in the longitudinal holes; c. a copper bar is formed in a way that the diameter of the copper bar is nearly the same as the diameter of the longitudinal hole, the screw threads are matched and the length of the copper bar is different from theend cap of a screw; the end cap of the screw is screwed in the longitudinal holes with different length and are hammered tightly; d. the two ends along the horizontal direction and the longitudinal direction of the water cold plate are screwed into the end cap of the screw and are riveted tightly; then the end surfaces of all the end caps are milled plainly; e. finally, a rectifier bridge module and an IGBT module are arranged on the processed copper water cold plate. The invention overcomes the defects water seepage of the existing water cold plate waterway pipeline and overhigh casting cost; in the limited space of the copper plate, an S-shaped waterway passage is arranged; circulating water flows smoothly, thus leading the heat dissipation area to be the largest, achieving the aim of heat dissipation excellently, meeting the performance requirement of a high-power switching power, and improving the overall operation efficiency of the power.

Description

The processing method of high-power switch power supply commutation bridge and cooled plate

Technical field

The present invention relates to the processing method of a kind of high-power switch power supply commutation bridge and IGBT cooled plate.

Background technology

Lanzhou heavy ion avcceleration cooling storage ring has up to a hundred to the high power switching power supply (80KVA) of magnet power supply usefulness.The common feature of main circuit is a circuit form of selecting a plurality of rectifier bridge modules and the output of IGBT module for use.Because power is bigger, adopt air blast cooling not reach the purpose of heat radiation, must adopt the recirculated water cooling mode.Existing recirculated water cooling design is the back side formation cooled plate that cooling water pipe is welded on copper coin, though the simple cooling effect of this way is undesirable; Or, form technologies such as waterway pipe, back welding by inner groove milling with two copper coins, and make cooled plate, this way technology is numerous and diverse, and greatest problem is that solder side is big, under high hydraulic pressure, is difficult to proof strength, and weld seam can seep water.Ways such as casting are arranged again, cross high reason because of cost and should not adopt.

Summary of the invention

For cooperating the special process requirement of designed high power switching power supply, make the interior chip-stack of power cabinet easy for installation, the object of the present invention is to provide the processing method of a kind of high-power switch power supply commutation bridge and IGBT cooled plate.

The object of the present invention is achieved like this:

The processing method of a kind of high-power switch power supply commutation bridge and IGBT cooled plate may further comprise the steps:

A. select 25mm thick, 190mmX990mm rectangle copper plate is that the 5-20mm drill bit is from the corresponding at interval punching of rectangular copper transverse ends with the aperture;

B. punch on one side from the rectangular copper longitudinal terminal surface with the 10-20mm drill bit, longitudinal holes connects with horizontal duct respectively again, and car becomes screw thread in the hole;

C. the copper rod car is become and indulge that the aperture is corresponding, screw thread matches, the not threaded plug of length, the plug end is the conical surface slightly, the screw rod plug is screwed in the hole of vertical different length, strikes at last tightly;

D. the cooled plate transverse ends being screwed in the aperture is 5-20mm screw rod plug, and Zui Hou is tight, and is after finishing that all plug facing cuts are flat;

E. at last rectifier bridge module and IGBT module are installed on the red copper cooled plate of processing together.

The beneficial effect of advantage of the present invention and generation is:

1, so big cooled plate also is rare in the Switching Power Supply at home.The present invention adopts and breaks into through hole from copper coin transverse ends correspondence.For preventing off-centre and drill bit being fractureed, 6 deep hole drills have been made from branch length such as 150mm to 650mm.Make earlier a location hole on copper coin, beat the hole of certain-length with stub drill, change slightly long drill bit again into and continue to beat certain length, preface like this is advanced; Each drill bit progress must be moved back bits about 5mm, prevent the drill bit that fractures, and the method has guaranteed long success for the punching of 990mm rectangle copper plate, and the waterway channel that serpentine is set for the limited space of copper coin is laid a good foundation.

2, the present invention has overcome the infiltration of existing cooled plate waterway pipe, the too high defective of casting cost, and in the limited space of copper coin, the water route is unimpeded, makes the area of dissipation maximum, reaches good heat radiation purpose;

3, the water route of the setting of the present invention film-cooled heat maximum of forgiving, and processing is simple, easy for installation.Cooled plate has obtained extensive use in the heavy ion avcceleration cooling storage ring high power switching power supply of Lanzhou, cooling effect is good, has satisfied the high power switching power supply performance requirement, has improved the overall operation efficiency of power supply.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is the corresponding at interval punching schematic diagram of Fig. 1 transverse ends.

Fig. 3 is Fig. 1 longitudinal terminal surface schematic diagram that punches on one side.

Fig. 4 is that Fig. 1 screw rod plug screws in vertical hole, hole schematic diagram.

Fig. 5 is that Fig. 1 screw rod plug screws in the vertical transverse holes schematic diagram in hole.

Fig. 6 laterally screws in the plug schematic diagram of riveting tightly.

Fig. 7 is that the cooled plate water route machines schematic diagram.

Embodiment

The work flow of a kind of high-power switch power supply commutation bridge and IGBT cooled plate is as follows:

Select 25mm thick, 190mmX990mm rectangle copper plate is that the 15mm drill bit is from the corresponding at interval hole, 5 road of making a call to of rectangular copper transverse ends with the aperture.Because cooled plate is longer, can cause off-centre and drill bit to fracture easily with single long drill bit from one side punching, so must break into through hole from copper coin transverse ends correspondence.Do a frock earlier, cooled plate to be processed is fixed on the lathe.For preventing off-centre and drill bit being fractureed, 6 deep hole drills from branch length such as 150mm to 650mm specially customized.At first, make a location hole on copper coin, beat the hole of certain-length earlier with stub drill, change slightly long drill bit again into and continue to beat certain length, so preface is advanced.Each drill bit progress must be moved back bits about 5mm, otherwise the drill bit (referring to Fig. 2) that fractures easily.After laterally punching was finished, on one side punch from the rectangular copper longitudinal terminal surface with the 10mm drill bit, 3 roads were made a call in the left side of copper coin again, and 4 roads are made a call in the right side, and longitudinal holes connects with horizontal duct respectively, and car becomes the screw thread (see figure 3) in the hole; The copper rod car is become and indulge that hole corresponding size, screw thread match, the not threaded plug of length, end is the conical surface slightly.The screw rod plug is screwed in the hole, strike at last tightly, make full use of the sticking stickiness of copper, Qi is tight.The method was both easy, firm again (water-tight) (ginseng Fig. 4); The cooled plate transverse ends is screwed in the tight (see figure 6) of screw rod plug , form the waterway channel of serpentine, after finishing that all plug facing cuts are flat; At last, on the copper plate that rectifier bridge module and IGBT module are installed in together on the process water cold drawing (seeing Fig. 1, Fig. 7).

Claims

1. the processing method of high-power switch power supply commutation bridge and IGBT cooled plate may further comprise the steps:

A. select 25mm thick, 190mmX990mm rectangle copper plate is that the 5-20mm drill bit breaks into through hole from rectangle copper plate transverse ends interval correspondence with the aperture;

B. be that the 10-20mm drill bit punches from the vertical side end face of rectangle copper plate with the aperture again, longitudinal holes connects with horizontal duct respectively, and car becomes screw thread in the hole;

C. the copper rod car is become and indulge that the aperture is corresponding, screw thread matches and the not threaded plug of length, the plug end is the conical surface slightly, the screw rod plug is screwed in the hole of vertical different length, strikes at last tightly;

D. the cooled plate transverse ends being screwed in the aperture is 5-20mm screw rod plug, rivets tightly at last, after finishing that all plug facing cuts are flat;